Paul knows a lot about Australia. His uncle is Australian. Paul, ...Australia.

It’s possible that they have gone home early. (MAY) They ...                                                  home early.

Someone started shouting at the waiter. It attracted the attention of everyone in the room. Someone started shouting at the waiter, ... everyone in the room.

I’m sure John knew about this! (HAVE) John ... about this!

I’ll meet Paul tomorrow if he doesn’t feel ill. I’ll meet Paul tomorrow unless ... ill.

It's possible that Janet's car broke down before she reached London. (COULD) Janet’s car ...                                                 before she reached London.

Sandra has lived in many countries in Africa. Her mother works for the WWF. Sandra, ... , has lived in many countries in Africa.

I'm sure that’s Emma’s sister. She looks just like Emma! (MUST) That ... sister. She looks just like Emma!

It is possible that the plane will land at a different airport. (MAY) The plane ... a different airport.

Jason is in room 84. It is on the second floor. Jason is in room 84, ... floor.

Matt is afraid of water. It explains why he can't swim. Matt is ... can’t swim.

Mrs Silverstone employs three gardeners. She's the owner of this big garden. Mrs Silverstone, ... , employs three gardeners.

I’ll come with you if you pay for the tickets. I’ll come with you as ... for the tickets.